feat: add lyrics support

[aidewoode]

Fix #156

[coveralls]

Coverage Report for CI Build 31704789072

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Build has drifted: This PR's base is out of sync with its target branch, so coverage data may include unrelated changes.
Quick fix: rebase this PR. Learn more →

Coverage remained the same at 100.0%

Details

• Coverage remained the same as the base build.
• Patch coverage: 88 of 88 lines across 8 files are fully covered (100%).
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	1327
Covered Lines:	1327
Line Coverage:	100.0%
Coverage Strength:	136.61 hits per line

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💛 - Coveralls

[coveralls]

Coverage Report for CI Build 32845250442

Warning

Build has drifted: This PR's base is out of sync with its target branch, so coverage data may include unrelated changes.
Quick fix: rebase this PR. Learn more →

Coverage remained the same at 100.0%

Details

• Coverage remained the same as the base build.
• Patch coverage: 97 of 97 lines across 10 files are fully covered (100%).
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

---

Coverage Stats

Relevant Lines:	1329
Covered Lines:	1329
Line Coverage:	100.0%
Coverage Strength:	72.68 hits per line

---

💛 - Coveralls

[Copilot]

Pull request overview

Adds embedded, external, and uploaded LRC lyrics support to the media library and player.

Changes:

• Extracts, stores, parses, displays, and synchronizes lyrics.
• Adds administrative LRC uploads and full-library synchronization.
• Adds player lyrics controls, styling, API endpoints, and tests.

Reviewed changes

Copilot reviewed 47 out of 55 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test/test_helper.rb	Adds lyrics test helpers.
test/models/song/lyrics/parser_test.rb	Tests LRC parsing.
test/models/song/lyrics_test.rb	Tests lyrics retrieval and uploads.
test/models/media_test.rb	Tests lyrics synchronization.
test/models/media_file_test.rb	Tests embedded lyrics extraction.
test/jobs/media_sync_all_job_test.rb	Tests full-sync behavior.
test/fixtures/files/sample.lrc	Adds an LRC fixture.
test/controllers/songs/lyrics_controller_test.rb	Tests lyrics endpoints.
test/controllers/songs_controller_test.rb	Tests song editing and API updates.
test/controllers/media_syncing_controller_test.rb	Tests full-sync requests.
db/schema.rb	Adds the lyrics column.
db/migrate/20260806103000_add_lyrics_to_songs.rb	Migrates song lyrics storage.
config/routes.rb	Adds lyrics and song-edit routes.
config/locales/en.yml	Adds lyrics and sync labels.
config/brakeman.ignore	Reformats existing ignore metadata.
app/views/songs/lyrics/show.json.jbuilder	Returns raw lyrics as JSON.
app/views/songs/lyrics/show.html.erb	Renders parsed lyrics.
app/views/songs/edit.html.erb	Adds the LRC upload form.
app/views/songs/_song.html.erb	Adds song editing access.
app/views/shared/_player.html.erb	Adds the lyrics toggle.
app/views/shared/_icons.html.erb	Updates the lyrics icon.
app/views/shared/_empty_alert.html.erb	Supports custom empty messages.
app/views/settings/libraries/show.html.erb	Adjusts library sync layout.
app/views/media_syncing/_button.html.erb	Adds quick/full sync choices.
app/views/layouts/lyrics.html.erb	Adds the lyrics frame layout.
app/views/layouts/application.html.erb	Integrates the lyrics panel.
app/views/albums/show.html.erb	Adds song editing access.
app/models/song/lyrics/parser.rb	Implements LRC parsing.
app/models/song/lyrics.rb	Implements lyrics loading and uploads.
app/models/song.rb	Includes lyrics behavior.
app/models/media.rb	Persists synchronized lyrics.
app/models/media_file.rb	Extracts embedded lyrics.
app/jobs/media_sync_all_job.rb	Adds full synchronization.
app/javascript/player.js	Exposes seek events and playback time.
app/javascript/controllers/player_controller.js	Manages the lyrics panel.
app/javascript/controllers/mini_player_controller.js	Updates the player selector.
app/javascript/controllers/lyrics_controller.js	Synchronizes displayed lyrics.
app/javascript/controllers/index.js	Registers the lyrics controller.
app/helpers/song_helper.rb	Exposes lyrics URLs.
app/helpers/application_helper.rb	Extends loader and alert helpers.
app/controllers/songs/lyrics_controller.rb	Serves song lyrics.
app/controllers/songs_controller.rb	Handles lyrics uploads.
app/controllers/media_syncing_controller.rb	Enqueues full synchronization.
app/assets/stylesheets/settings/theme.css	Adds lyrics theme variables.
app/assets/stylesheets/components/lyrics.css	Styles the lyrics panel.
app/assets/stylesheets/components/button.css	Styles active icon buttons.
app/assets/stylesheets/application.css	Imports lyrics styles.

Suppressed comments (1)

app/views/media_syncing/_button.html.erb:25

• data-turbo-submits-with is attached to the form here, so Turbo will not swap the Full Sync button text while submitting. Put this attribute in the button_to data: option, as the previous single sync button did.

              form: { data: { "turbo-submits-with" => t("button.syncing") } }

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